Commemorating Judit Bar-Ilan from bibliometric and altmetric perspectives

This article commemorates the late Judit Bar-Ilan by illuminating her academic career from bibliometric and altmetric perspectives. We analyze Judit's publication output demonstrating her standing in the international scientometric community. Her co-authorship network spans 99 researchers from 27 countries. An analysis of title terms highlights how her research interest developed over the course of her 30-year career. As Judit was one of the "founding mothers" of the still young field of altmetrics, we also investigate how her publications were shared on social media. We group Twitter users into eleven user categories and analyze how those sharing the same publication are following each other. An analysis of the geolocations of Twitter users demonstrates that Judit's work was discussed worldwide, in particular in Europe and North America. The bibliometric and altmetric analyses confirm that Judit was an outstanding researcher, a supportive mentor and a great colleague. She will be missed.